Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Redefining Retirement Planning Millennials are redefining retirement planning. All Muni Bonds Are Not Created Equal Gaining a better understanding of municipal bonds makes more sense than ever. Potential Income from an IRA Estimate your monthly and annual income from various IRA types.